Stock



Aug. 31, 1948. H. STOCK Re. 23,035

SUCTION NOZZLE Original Filed Jan. 13,1944 3 Sheets-Sheet 1 Inventor H. STOCK SUCTION NOZZLE Aug. 31, 1948.

5 Sheets-Sheet 2 Original Filed Jan. 15, 1944 Inventor ,6 ,J ,0 I /%722 y 5 Toe/r H. STOCK SUCTION NOZZLE Aug. 31, 1948.

5 Sheets-Sheet 5 Original File d -Ja n. 13, 1944 Inventor 24m and By WW; 3%

Reissued Aug. 31, 1948 UNITED STATES SUC Harry Stock, Minneapolis, Minn.

Original No. 2,419,740, dated 111116129, 1947, ;Serial No. 518,153, January 13, 1944. Application for reissue October 28, 1947, Serial No. 782,470

2 Claims. 1

This invention relates to new and useful improvements in suction apparatus and more particularly to a nozzle for use in loading, unloading and transferring Various granular material or material of a pulverized nature such as chemicals.

An important object of the present invention is to provide a suction nozzle constructed in such a manner as to be more positive acting in its suction operation on materials than nozzles heretofore used.

Another important object of the invention is to provide an air inlet for suction nozzles which can be easily controlled by the operator.

Other objects and advantages of the invention will become apparent to the reader of the following description.

In the drawings:

Figure 1 is a side eleva-tional view of the nozzle.

Figure 2 is a top plan view.

Figure 3 is a front end elevational View.

Figure 4 is a rear end elevation-a1 View.

Figure 5 is an enlarged fragmentary detailed sectional View taken substantially on the line 5-5 of Figure 2.

Figure 6 is a fragmentary detailed sectional view taken substantially on the line 66 of Figure 2.

Figure 7 is an elevational View of the shutter air regulator.

Figure 8 is a fragmentary sectional View taken substanstially on the line 88 of Figure 5.

Figure 9 is a fragmentary detailed sectional View taken substantially on the line 9-9 of Figure 1.

Figure 10 is a fragmentary detailed sectional view taken substantially on the line llll of Figure 4.

Figure 11 is a fragmentary detailed sectional view through the suction tube.

Referring to the drawings wherein like numerals designate like parts, it can be seen that numeral denotes an elongated suction tube slightly flared at its inlet end as at 6. Adjacent this flared end 6, the tube 5 is provided with rectangular-shaped air inlet openings 1.

The tube 5 has a short cylindrical extension 8 at its hose attaching end, this extension 8 being provided with a flanged collar 9 over which a flanged sleeve I0 is adapted to engage with suitable packing means I l interposed between the flanged collar 9 and the flanged sleeve [0. The sleeve I0 is suitably secured to a ring I2 on the adjacent end of a conduit or hose [3.

A shell '4 encases the major portion of the suction tube 5, one end being restricted as at I5.

One side of the shell [4 flares outwardly as at IE to define an air inlet compartment having a. rear wall IT. This wall I? has an air inlet opening 18 and inwardly of this opening and carried by the side walls of the flared portion 16 of the shell are substantially inverted V-shaped channeled guides IS in which move the side edge portions. of a flexible shutter 20, which is made up of a plurality of slats 2| suitably secured to a flexible web 22. Inwardly of the shutter 20 is a. foraminous or mesh Wall 23.

A boss 24 projects outwardly from the shutter and through the air inlet opening l8 where it is formed with a vertical opening receiving a guide rod 25, the upper end of which is secured to the upper portion of the back wall I! while the lower end is secured as at 2B detachably to the extension 8 of the suction tube 5. A wing headed screw 27 is feedable into the boss 24 and adapted to bite against the rod 25 to hold the shutter 20 in any desired position in order to regulate the amount of air that is to be admitted to the air compartment and the suction tube 5.

A handle 28 is provided on the shell I4. Obviously, the connection shown in Figure 9 permits a swiv-elled action between the suction tube 5 and the hose coupling I3 so that the nozzle may be rotated to the extent desired.

While the foregoing specification sets forth the invention in specfiic terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the claimed as new is:

l. A suction nozzle comprising a suction tube having an intake end and a discharge end, a shell encasing said tube and having a portion. extending along one side of the tube from said intake to said discharge end and flaring toward said discharge end, said portion having an open rear end to provide an air inlet into said portion, air inlet ports in said tube adjacent to the intake end thereof establishing communication with said tube and said shell, a flexible slat shutter for closing said inlet, channel tracks at opposite edges of said shutter and opposite sides of said inlet within said portion and in which said shutter is slidably mounted for adjustment to open and close the inlet, said tracks being l-ongitudi nally V-shaped to cause said shutter when opened to assume a position at an acute angle to the plane of said inlet for accommodation in said invention, what is port-ion, and means to secure the shutter in different adjusted positions. REFERENCES CITED 2. A suction nozzle comprising a, suction tube The following references are of record in the having a forward receiving end adapted to be file Of this patent! inserted into ranular material and a. rear dis- 5 UNITED STATES PATENTS charge end, a suction conduit connected to the rear end of said tube, a, shell surrounding said Number Name Date tube and, running rearwardly from the forward 646,490 Deery Apr. 3, 1900 end of said tube, said shell having a. regulatable ,416,0 3 Gieseler May 16, 1922 air admission opening in its rear portion, said 10 FOREIGN PATENTS tube adJacent to but spaced slightly rearwardly from its forward end having a constricted poru b Country Date tion therein, and said constricted portion having 224,613 Germany July 23, 1910 passages through its well at three sides thereof= 2763114 Germany July 4, 1914 communicating with said shell. e

HARRY STOCK. 

